Mold



May, 13 1924. Y 1,493.91;

G. P. WSHBURN MOLD ' FiledvDec. 6, 1920 4o larger than the pins, in order to Patented May 13, 1924.

UNITED STATES GEORG-E IP. NASI-IIBURNJ OF LOS ANGELES, CALIFORNIA.

MOLD.

Application filed December 6, 1920. Serial No. 428,749.

To all 'whom t may concern.'

Beit known that I, GEORGE P. lVAsHURN,

a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Molds, of which the following is a specification.

It is the object of this invention to provide a mold that is particularly applicable lo for molding the lead parts of electric storage batteries.

The invention contemplates the provision of molding plates adapted to have respective pairs of surfaces of thef plates brought together so as to cooperate to form molds;

The plates are hinged togetl'ier at one of their ends so that the respective pairs of cooperating surfaces of the plates may be brought together by swinging the plates relative to one another upon their pivots.

The invention will be readily understood from the following description of the accompanying drawings, in which z' y Fig. l is a side elevation of the mold showing one pair of cooperating surfaces of the plates brought together into operative position. y

Figs. 2 and 3 are sections on the lines 2-2 and 3 3, of Fig. 1, respectively.

The plates comprising the mold are shown at 1 and 2 and at one end of the same are provided with projecting handles 3. The opposite ends of the plates are provided with split lugs 4 and a connecting link 5 has its respective ends received within the slots of the respective split lugs. `Pivot pins t5 extend through the split lugs and through the ends of link 5, and the openings receiving the pins are preferably somewhat permit FII of some play in the parts,

Springs 7 are arranged at the respective sides of the split lugs with the ends of the springs engaging the respective pins 6 in order to hold the mold plates against play during pivotal movement of the same. This is effected by virtue of the fact that with the springs in applied position they are under tension and are disposed at the outer sides of the lugs so that any lateral movement of one pair of lugs with respect to the other is resisted bythe springs, thus 'One pair of cooperating surfaces of the mold plates are shown at 8 and 9 and in Fig. 1 I have shown the plates swungupon their pivots until these cooperating` surfaces lie against one another.

By swinging the mold plates upon their pivots through arcs of 180 degrees, the opposite pair of cooperating surfaces 10 and 11 of the plates will be brought against one another so as to form mo-lds.

In Fig. 2 I have shown the surfaces ll of moldI plate 2 as provided with a plurality of suitably shaped molding recesses 12, and it will be understood that the co operating surface 10 of plate 1 is provided with similan recesses .12?L arranged to co operate with the recesses 12 when these surfaces of the mold plates are brouglit together.

' In similar manner the surface S of mold plate` l is provided with recess 13 as shown in Fig. 3, and these recesses cooperate with similar recesses 13a in the surface 9 of mold plate 2 so as to form molds when surfaces S and 9 are brought together.

It will thus be seen that I have provided a mold construction wherein the mold plates are readily movable relative to one another so as to bring one pair or the other of the surfaces of the mold plates against one another in order to form molds.

lVhat is claimed is: y

A mold comprising a pair of molding plates, each having a pair of molding surfaces adapted to cooperate with similar molding surfaces on the other plate.y and a mounting for the plates to permit either` plate to be swung to present either of its surfaces to the corresponding surface of theother plate, said mounting comprising spaced lugs formed on the plates, a link extending between the lugs yand through the lugs for pivotally connecting the lugs of one plate with those of the other plate, and coiled contractile springs attached at their ends to the ends of the pivot pins so as to be under tension and disposed to bear against the outer sides of the lugs to prevent latein al movement of the lugs of one plate with respect to the lugs of the other plate.f

In testimony whereof I have signed my name to this specification.

maintaining the plates against lateral movement with respect 'to each other.

GEORGE P. IVASHBURN. 

